Demountable paint brush



Sept. 12, 1967 B ROSENZWEK; 3,340,557

DEMOUNTABLE PAINT BRUSH Filed May 20, 1965 VFmt 3.

United States Patent O 3,340,557 DEMOUNTABLE PAINT BRUSH BenjaminRosenzweig, New York, N.Y. (173-27 Fairchild Ave., Flushing, N.Y. 11358)Filed May 20, 1966, Ser. No. 551,575 2 Claims. (Cl. 15-176) Thisinvention is for a new and improved paint brush, in Which part of theferrule can be dismounted from the brush, freeing the bristle assembly,thereby resulting in important advantages over the conventionalundetachable brush commonly in use.

The freed bristle assembly, and particularly the area nearest theadhesive block which is the focal point of sedimentation anddeterioration in the undetachable brush, can be thoroughly cleaned. Whenunencumbered by the lengthy handle and the ferrule, the freed bristleassembly can be safely immersed, on its side, in paint solvent in asmall air-tight container, minimizing fire hazard from combustible paintand solvent. Such easy storage of the freed bristle assembly on its siderenders obsolete the practice of soaking or storing the undetachablebrush standing upright on its bristles, misshaping them and destroyingthe usefulness of the brush. This invention further provides a quick,simple and inexpensive method for replacing one bristle assembly foranother in the same handle and ferrule, thus resulting in lower cost,more convenient storage of brush units and the speeding-up of paintingjobs and cleaning-up chores.

Other important advantages and objects of this invention will becomeapparent from the disclosures in the following specification andaccompanying drawings, in which:

FIG. 1 is a perspective view of the paint brush, showing it in itsassembled form.

FIG. 2 is a sectional view through the handle and ferrule, showing theconnection to the handle, and the method of fastening the metal ferrulestogether at their sides, along line 2-2 of FIG. 1.

FIG. 3 is a sectional view through the ferrule and bristle block, alongline 3-3 of FIG. 1.

FIG. 4 is a cross-sectional view through the ferrule, along line 4 4 ofFIG. 1.

FIG. 5 is a perspective view of the overlapping removable ferrule,showing its inside surface and curved edges.

FIG. 6 is a top view of the end of the ferrules, showing the relativepositions of the edges, before fastening together. l

FIG. 7 is a top View of the ends of the ferrules, in a fastenedposition, showing an alternative method of such fastening means.

Handle 10 is a paint brusht handle of the conventional narrow, elongateddesign, terminating in a flared shape.

Bristle assembly 11 is a single unit, comprising bristles 12 attached toa solid block of adhesive material 13, which block has a raised bead 14,15 running around its length.

'Ihe ferrules 16, 17, Comprising two separate parts of sheet metal,approximately equal in size, are shaped to it ush against the lower endof handle 10, the entire bristle block 13 and the upper portion of thebristles 12. The ferrule grooves 18, 19 run around the length of theinterior surface of the ferrules 16, 17 and are positioned to fit overthe bristle 'block bead 14, 15 when the ferrules 16, 17 are fastenedtogether.

The ferrule 17 is permanently secured along its upper length to thelower part of the handle 10 by rivets 20, 21, 22. The other ferrule 16is an independent part, not permanently attached to any part of thepaint brush. Each of the two ferrules 16, 17 is curved at its verticaledges 23,

24 fitting flush against the corresponding sides of the lower end of thehandle 10 and the bristle block 13.

The ferrules 16, 17 are fastened together as shown in FIGS. 2, 3 and thedetails of such fastening method are shown in FIG. 6, with analternative method being shown in FIG. 7.

The edges 23 or the ferrule 17 are formed into exterior flanges, whilethe corresponding edges 24 of the ferrule 16 are formed into interiorflanges.

As an alternative method of fastening the ferrules 16, 17 together, theedges 23 of the ferrule 17 have grooves 25 on their exterior faces,while the corresponding edges 24 of the ferrule 16 have beads 26 ontheir exterior faces.

To assemble the paint brush of this invention, the bristle assembly 11is positioned within the horizontallyplaced ferrule 17, so that thelower bristle block bead 14 or 15 is resting on the ferrule groove 19.The ferrule 16 is positioned over the upper surface of the bristleassembly 11, so that its groove 18 rests on the upper bristle block bead14 or 15. The assembly is completed by hand pressure on the exteriorsurfaces of the curved edges 23, 24 of the ferrules 16, 17 until theflanges 23 overlap and engage the iianges 24, -or as in the alternativemethod illustrated, the beads 26 overlap and engage the grooves 25.

Thepaint brush is dismounted by inserting a thin blade at the ferruleedges 32, 24 or 25, 26 and prying them apart, freeing the ferrule 16 andthe 'bristle assembly 11.

I do not propose herein to limit this invention to the specificembodiments described above, except as necessitated by the principlesand scope of the appended claims.

I claim as my invention the following:

1. A demountable paint brush, having a handle terminating in a flaredshape at its lower end, a single brush unit comprising bristles attachedto a block of adhesive material, and two ferrules enclosing the brushunit, each ferrule being adapted with reciprocal integral fasteningmeans at its vertical edges, with one ferrule being secured along itsupper edge to the flared lower end of the handle by rivets, while theother ferrule is an independent part, which is detachably secured to theriveted ferrule by said fastening means, thus releasably engaging thebrush unit at will, with the brush block of adhesive material having araised bead running around its entire length, while the interiorsurfaces of the ferrules have a groove running around their entirelength, with said bead and groove positioned to engage each other Whenthe ferrules are fastened together.

2. A paint bristle unit, as described in claim 1, wherein said block ofadhesive material has a raised integral bead running around its entirelength, so positioned as to detacha'bly engage a groove on the interiorsurface of the ferrules.

References Cited UNITED STATES PATENTS 134,745 1/1873 Gorman 15-1772,326,879 8/ 1943 Neuhausen 15-202 2,490,159 12/ 1949 Ricchiuti 15-2022,642,610 6/1953 Erik 15-177 X 2,668,972 2/1954 Pignato 15-176 X2,785,427 3/ 1957 Bury 15-202 2,912,709 11/1959 Carlson et al 15-202 XFOREIGN PATENTS 781,718 8/ 1957 Great Britain.

CHARLES A. WILLMUTH, Primary Examiner.

PETER FELDMAN, Assistant Examiner.

1. A DEMOUNTABLE PAINT BRUSH, HAVING A HANDLE TERMINATING IN A FLAREDSHAPE AT ITS LOWER, END, A SINGLE BRUSH UNIT COMPRISING BRISTLESATTACHED TO A BLOCK OF ADHESIVE MATERIAL, AND TWO BRISTLES ATTACHED TO ABLOCK OF ADHESIVE FERRULE BEING ADAPTED WITH RECIPROCAL INTEGRALFASTENING MEANS AT ITS VERTICAL EDGES, WITH ONE FERRULE BEING SECUREDALONG ITS UPPER EDGE TO THE FLARED LOWER END OF THE HANDLE BY RIVETS,WHILE THE OTHER FERRULE IS AN INDEPENDENT PART, WHICH IS DETACHABLYSECURED TO THE RIVETED FERRULE BY SAID FASTENING MEANS, THUS RELEASABLYENGAGING THE BRUSH UNIT AT WILL, WITH THE BRUSH BLOCK OF ADHESIVEMATERIAL HAVING A RAISED BEAD RUNNING AROUND ITS ENTIRE LENGTH, WHILETHE INTERIOR SURFACES OF THE FERRULES HAVE A GROOVE RUNNING AROUND THEIRENTIRE LENGTH, WITH SAID BEAD AND GROOVE POSITIONED TO ENGAGE EACH OTHERWHEN THE FERRULES ARE FASTENED TOGETHER.